Aethue lowcock



(No Model.) .7.

t A. LOWGOGK-& J. TAYLOR.

CLEANER FOR STEAM BOILERS.

Patented Oct. 23, 1883.

FICHB.

FIG-5.

N. PETERS. Plmmum n lw. Wash-upon. ac.

UNITED STATES PATENT OFFICE.

ARTHUR LOXVOOOK, OF SHREWSBURY, SHROPSHIRE, AND JOHN TAYLOR, OF SALFORD, COUNTY OF LANCASTER, ENGLAND; SAID TAYLOR ASSIGNOR TO SAID LOVOOOK.

CLEANER FOR STEAM-BOILERS.-

SPECIFICATION forming part of Letters Patent No. 287,038, dated October 23, 1883.

Application filed May 2?, 1883. (No model.) Patented in England July 12, 1882, No. 3,306,

To all whom it may concern,

. Be it known that we, ARTHUR LOWCOCK, of Shrewsbury, Shropshire, engineer, and JOHN TAYLOR, of Salford, in the county of Lancaster, engineer and millwright, have invented certain new and useful Improvements in Oleaners for Steam-Boilers, (for which we have obtained a patent in Great Britain, No. 3,306, hearing date July v12, 1882,) of which the fol- IO lowing is a specification.

Our invention relates to those fuel-economizers in which movable scrapers are employed to prevent the accumulation of soot and the objects of our invention are, first, to construct I 5 a reliable and simple reversing motion for the scrapers and other portions of the apparatus; secondly, to hold the worms in boxes which take the end-thrust, and also form bearings for the wornrshaft, and contain a supply of oil in which the worms run; and, thirdly, to attach vertical plates to the under side of the lifting-bars, in order to prevent the accumulation of soot between the lower horizontal pipes or tubes of the economizer. We attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is an end elevation, and Fig. 2 is a side elevation, of our improved machinery for raising and lowering the scrapers of a fueleconomizer. Fig. 3 is a side view, and Fig. 4 a plan, of a worm and worm-box. Figs. 5 and 6 are two views, on an enlarged scale, of the disk with its adjustable cams or plates connected with the reversing motion.

out the several views.

a is the counter-shaft, driven in either direction by a single belt. On the counter-shaft (L is the loose pulley a and two pulleys, a a,

40 also. a bevelgear, a, which is secured to the shaft a, and gears into a bevel-wheel, I), keyed to the worm-shaft b. a The shaft a also carries a bevel-gear, (P, which is keyed or cast on the boss of the pulley (K. The worm-shaft ,b is

supported at each end in bearings in the frame,

and in the middle by the worm-box b", which holds the worm b. The worm-box b has bear- Siinilar letters refer to similar parts throughslot in the strap fork-lever k.

ings at each side for the worm-shaft b", and is faced to form surfaces for the ends of the worm to bear against. The worm-box b also holds a supply of oil or other lubricant. The worm 5 gears into and drives the worm-wheel c, (on the stud 0,) to which is secured a wheel, 0 carrying the chain o for actuating the liftingbars (1 and scrapers (1. Sheets of iron (1 are \fixed to the under side of the liftingbars d, and descend (when the chain 0 is actuated)- into the spaces between the bottom horizontal tubes, 6, and thus prevent the accumulation of soot at that point. eare the vertical tubes. On the stud c is secured a bevel-gear, f, which gears into and drives a bevel-wheel, g, keyed to the shaft 9. At the other end of the shaft g is secured the disk h. (Shown enlarged in Figs. 5 and 6.) On the face of the disk h are two adj ustable'cams or plates, h h which alternately come into contact (during each partial revolution of the disk h) with a catch on striking-plate, Z, fixed to an upright weighted lever, Z, pivoted at its lower end to the frame, and moves with it over the center of the disk h.- To the lever Z is jointed one end of a bar, j. A stud, f, is secured to the other end of the bar j, and enters and is free to traverse a slot in the strap fork-lever k. The strap forklever k is supported in two bearings on the bracket k.

WVhen the drivingbelt is on the fast pulley a, which is secured to the countershaft a, motion is communicated by the bevel-gear a to the bevel-wheel b, worm-shaft I), worm b worm-wheel c, chain-wheel c and thus to the chain c, which raises or lowers the lifting-bars (Z and scrapers (1. By means of the bevelgear f the stud c (on which the worm-wheel c is mounted) also drives the bevel-wheel g, shaft 9, and disk hin the direction shown. by the arrow 'in Fig. 1. The cam 71. 011 the disk 71. comes into contact with the striking-plate Z 011 the weighted lever Z, and carries it forwardwith the rod j and studj which moves freely in a By the time the weighted lever Z has passed the vertical position the stud j" has traversed the length of the 2 assumes slot in 7:, and as Z falls forward the stud 7' acting on the lever it, draws it and the strap-fork forward, and so moves the belt from the fast pulley a over the loose pulley a onto the pul ley a", to which is secured the small bevelgear a. The bevel-gear a drives the bevelwheel I) in the opposite direction to that already described, and thus reverses the motion of the machinery, and causes the scrapers and the rest of the apparatus to move in the opposite direction.

Any number of worm-boxes, worms, and worm-wheels may be used.

The belt-shifting devices may form the sub 15 ject-matter of another application.

\Vhat we claim as our invention, and desire to secure by Letters Patent of the United States, v

ARTHUR LoWoooK. JOHN TAYLOR.

Vitnesses:

H. B. BARLO\V, S. XVALKEY'GILLETT, Both of the Patent Oflice, 17 St. Anns Square,

ilfrmchcsier. 

